Class 8 geography chapter 2 Land, Water, Natural Vegetation and Wildlife Resources

Class 8 Geography chapter 2

Land, Water, Natural Vegetation and Wildlife Resources

Ques.1. Answer the following questions.

(i) Which are the two main climatic factors responsible for soil formation?

Ans. Temperature and rainfall

(ii) Write any two reasons for land degradation today.

Ans. Two reasons are :

    - Deforestation

    - indiscriminate use of chemical pesticides and fertilizers in agriculture lands.

(iii) Why is land considered an important resource?

Ans. Land is considered as an important resource as it provides hatitation to a wide variety of Flora and fauna. Also used by human beings for various purposes such as agriculture, forestry, mining building houses and roads and setting up industries.

(iv) Name any two steps that government has taken to conserve plants and animals.

Ans. Government has taken : 

    - Setup national parks, wildlife sanctuaries and biosphere reserves for protecting natural vegetation and wildlife.

    - Banned the killing of lions, tigers, dears, great Indian bustard and peacocks.

(v) Suggest three ways to conserve water.

Ans. Ways :

    - Rain water harvesting

    - Lining irrigation canals to avoid seepage of water.

    - Replenishing ground water by promoting afforestation.

Ques.2. Tick the correct answer.

(i) Which one of the following is NOT a factor of soil formation?

(a) time

(b) soil texture

(c) Organic matter

Ans. (b)

(ii) Which one of the following methods is most appropriate to check soil erosion on steep slopes?

(a) shelter belts

(b) mulching

(c) terrace cultivation

Ans. (c)

(iii) Which one of the following is NOT in favour of the conservation of nature?

(a) switch off the bulb when not in use

(b) close the tap immediately after using

(c) dispose polypacks after shopping

Ans. (c)

Ques.3. Match the following.

(i) Land use

(ii) Humus

(iii) Rock dams

(iv) Arable land

(a) prevent soil erosion

(b) narrow zone of contact between the lithosphere, hydrosphere and atmosphere

(c) productive use of land

(d) organic matter deposited on top soil

Ans. i - c

        ii - d

        iii - a

        iv - b

Ques.4. State whether the given statement is true or false.

(i) Ganga Brahmaputra plain of India is an overpopulated region.

(ii) Water availability per person in India is declining.

(iii) Rows of trees planted in the coastal areas to check the wind movement is called intercropping.

(iv) Human interference and changes of climate can maintain the ecosystem.

Ans. (i) true

         (ii) true

         (iii) false

        (iv) false